SUMMARY Breeding objectives are largely determined by market tropics, the overall breeding objective can be considered in reproductive rate, carcass quality, adaptation and temperament. a simple efficient se:ection trait. Reas~ns why potential increas .. size are not as d1sadvantageous as 1n temperate areas are Reproductive performance has been less important in harsh environments because of th...

SUMMARY The procedures to be fo llowed and some o f the problems which ing breeding objectives are discussed. Specia l emphasis is given reconcile confl icts between different bases o f evaluation, and it ~o att~ that from,a, long-term viewpoi nt , effic i ~ncy s hould be the goal of ~~econcI where efflclency 1S measured as the rat10 of the v alue of all input br~ of al l outputs. In the shorte...

Ž . Our understanding of insulin-like growth factor-I IGF-I in cervids has been limited mostly to its effects on antler Ž . Ž . Ž . Ž development in red deer Cer us elaphus , roe deer Capreolus capreolus , fallow deer Dama dama , and pudu Pudu . puda . Although IGF-I has been found to play a critical role in reproductive function of other mammals, its role in reproduction of deer is unknown. Th...

in this study, production, reproduction, managerial, and economic parameters obtained from data recorded for lori-bakhtiari flock of sheep (500 heads of breeding ewe) stationed at the sheep's breeding station, were employed to determine the relative economic values of and breeding objectives for an annual cycle of production, in village system in this breed of sheep. economic value for a t...

in this study, production, reproduction, management and economic parameters deduced from recordings of 5 flocks with 720 heads of native goats during an annual cycle of production in transhumance, village and farming systems were employed to determine the traits' economic values. the economic values of the traits were estimated, using maximizing profit, revenue per cost as well as minimizi...

Beef cattle breeders are increasingly being offered gene marker tests for important traits in the breeding objective. They must make an economically rational decision whether to use these tests. Besides a potential immediate effect in seedstock sales, gene marker tests will affect the genetic improvement rate in the population. To examine the returns in a multi-trait breeding objective a pseudo...

Fruit brown rot caused by Monilinia spp. is the most important fungal disease of stone fruits worldwide. Several phenotyping protocols to accurately characterize and evaluate brown rot infection have been proposed; however, the outcomes from those studies have not led to consistent advances in resistance breeding programs. Breeding for disease resistance is one of the most challenging objective...